just/test/array-mean/index.js at fix-tests · hmmhmmhm/just

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var test = require('../util/test')(__filename);

var mean = require('../../packages/array-mean');

test('array of numbers returns mean', function(t) {

t.plan(3);

t.equal(mean([1, 2, 3, 2, 4, 1]).toFixed(4), '2.1667');

t.equal(mean([4.5, -1.1, 98.6]), 34);

t.equal(mean([4]), 4);

t.end();

});

test('list of numeric arguments returns mean', function(t) {

t.plan(3);

t.equal(mean(1, 2, 5, 2, 4, 1), 2.5);

t.equal(mean(100, 100, 100.1, 100), 100.025);

t.equal(mean(-4), -4);

t.end();

});

test('non-numeric values throw', function(t) {

t.plan(3);

t.throws(function() {

mean([1, '2', 3, 4]);

});

t.throws(function() {

mean({a: 2});

});

t.throws(function() {

mean(undefined);

});

t.end();

});